Falling Rock Preventing Fence With Fabrication Typewire Net

ABSTRACT

A falling rock preventing fence assembled with a steel net is disclosed, in which a plurality of support members are provided in a pipe shape having a rectangular grooves in upper and lower longitudinal directions, with the support member being installed on the ground at regular intervals, and both ends of the steel net formed in a rectangular plate shape are inserted into the rectangular grooves of the neighboring support member and are fixed using a fixture such as a bolt, etc., and the upper and lower portions of the steel nets stacked in the upper and lower direction are connected with a connection member such as a bolt, etc., and the strength of the steel net is enhanced by the rectangular grooves longitudinally formed in the support member and the end of the steel net inserted in the rectangular groove.

TECHNICAL FIELD

The present invention relates to a falling rock preventing fence inwhich a steel net is provided based on an assembling type, and inparticular to a falling rock preventing fence assembled with fabricationtype wire net in which a plurality of support members are provided in apipe shape having a rectangular grooves in upper and lower longitudinaldirections, with the support member being installed on the ground atregular intervals, and both ends of the steel net formed in arectangular plate shape are inserted into the rectangular grooves of theneighboring support member and are fixed using a fixture such as a bolt,etc., and the upper and lower portions of the steel nets stacked in theupper and lower direction are connected with a connection member such asa bolt, etc., and the strength of the steel net is enhanced by therectangular grooves longitudinally formed in the support member and theend of the steel net inserted in the rectangular groove, so that thework for installing steel nets between the support members is easy andsimply. Even when a steel net is damaged by falling rocks or landslide,it is needed to repair only the damaged portions, so that a maintenanceis easy, and a cost for the repair decreases.

BACKGROUND ART

Generally, a falling rock preventing fence is a safety facility which isdesigned to prevent various vehicle and life accidents which occur asrocks fall or landslide occurs at a road neighboring with a cut side ofa mountain.

As shown in FIG. 1, the conventional falling rock preventing fencecomprises a plurality of support members 10 which are installed on theground at regular intervals and are formed in a H shape, a plurality ofwire ropes 20 which horizontally cross the support members 10, aplurality of wire rope fixtures 21 which are fixedly installed at thesupport members 10 provided at both ends and are used for fixing bothends of the wire rope 20, and a steel net 30 which is engaged at theback sides of the support members 10.

However, in the conventional falling rock preventing fence, since thesteel net 30 is formed of one long steel net formed in the same manneras the entire length of the falling rock preventing fence 100, the useris needed to unroll the steel net which has a big volume and big weightand is transferred in the rolled state and to install over the entireportions of the back surface of the falling rock preventing fence 100.Since the back surface of the support member 10 and the wire rope 20 areneeded to be tied, respectively, much time is needed for installationwork, and the cost increases.

In addition, in the conventional falling rock preventing fence, sincethe steel net is formed of one long steel net which has the same lengthas the entire length of the falling rock preventing fence, when part ofthe steel net installed at the backside of the falling rock preventingfence is damaged due to the falling rocks or landslide, the maintenanceis not easy.

DISCLOSURE OF INVENTION

Accordingly, it is an object of the present invention to overcome theproblems encountered in the conventional art.

It is another object of the present invention to provide a falling rockpreventing fence assembled with a steel net in which support membersinstalled on the ground at regular intervals are formed in a pipe shapehaving a rectangular groove at its back surface, and a steel netinstalled at a back surface of the support member is formed in arectangular plate shape, and both ends of the rectangular plate shapesteel end are inserted into the rectangular groove, and the upper andlower ends of the steel net, which is stacked up and down between thesupport members, are connected using a connection member such as a bolt,etc., so that the strength of the support member is enhanced, and thework for installing the steel net at the support member is easy andsimple. When the steel net is damaged by falling rocks or landslide,since it is possible to maintain only the damaged steel net, themaintenance is easy, and the cost decreases.

To achieve the above objects, in a falling rock preventing fence whichincludes a plurality of support members vertically installed on theground at regular intervals, a plurality of wire ropes whichhorizontally pass through the support members, a plurality of wire ropefixtures which are fixedly installed at the support members provided atboth ends for thereby fixing the both ends of the wire rope, and a steelnet installed at a back surface of the support member, a falling rockpreventing fence assembled with a steel net characterized in that thesupport member is formed in such a manner that a rectangular groove isformed over the entire length of the back surface of the body formed ina pipe shape, and a rope through hole passes through the outer surfaceof the body and the lateral side of the both sides of the rectangulargroove; the steel net is formed in such a manner that a groove insertionportion inserted into the rectangular groove of the support member isformed at both sides of the steel net body formed in a rectangular plateshape so that it is inserted between the neighboring support members,and an upper and lower connection portion is formed at the upper andlower portions of the steel net body for engaging the upper and lowerportions of the steel net stacked between the support members; and thewire rope horizontally passes through the rope through hole formed atthe support member; and two groove insertion portions installed near thelateral sides and meeting with each other are inserted into therectangular groove of the support member, and a cover member isinstalled at the rear side of two groove insertion portions insertedtogether with the rectangular groove for supporting the lateral ends ofthe steel net, and the support member and the steel net are fixed usinga fixing bolt or a U bolt.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become better understood with reference tothe accompanying drawings which are given only by way of illustrationand thus are not limitative of the present invention, wherein;

FIG. 1 is a perspective view illustrating a conventional falling rockpreventing fence;

FIG. 2 is a back view illustrating a falling rock prevention apparatusaccording to the present invention;

FIG. 3 is a plane cross sectional view of FIG. 2;

FIG. 4 is a plane cross sectional view of a support member according tothe present invention;

FIG. 5 is a perspective view illustrating a steel net according to afirst embodiment of the present invention;

FIG. 6 is a perspective view illustrating a steel net according to asecond embodiment of the present invention;

FIG. 7 is a perspective view illustrating a steel net according to athird embodiment of the present invention;

FIG. 8 is a partial plane cross sectional view illustrating a state thata steel net according to a first embodiment of the present invention isinstalled;

FIG. 9 is a partial plane cross sectional view illustrating a state thata steel net according to a second embodiment of the present invention isinstalled;

FIG. 10 is a partial plane cross sectional view illustrating a statethat a steel net according to a third embodiment of the presentinvention is installed;

FIG. 11 is a view illustrating a state that a steel net according to athird embodiment of the present invention is connected at upper andlower sides;

FIGS. 12( a) through 12(c) are views of other embodiments of the presentinvention in which the ends of steel net bodies are fixed at a frameaccording to the present invention; and

FIG. 13 is a perspective view of another example of a support mountingmember in which a support member is installed according to the presentinvention.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be described in detail with reference toFIGS. 2 through 13.

As shown in FIGS. 2 and 3, the falling rock preventing fence assembledwith a steel net according to the present invention comprises aplurality of support members 10 which are vertically installed on theground at regular intervals, a plurality of wire ropes 290 whichhorizontally pass through the support members 10, a plurality of wirerope fixtures 21 which are fixedly installed at the support member 10provided at both ends for thereby fixing the both ends of the wire ropes20, and a steel net 30 which is installed between the support members10.

As shown in FIG. 4, in the support member 10, a rectangular groove 12 isformed over the entire portions of the back surface of the body 11formed in the pipe shape, and a rope through hole 15 is horizontallyformed at the outer surface of the body 11 and the lateral side 14 ofthe both sides of the rectangular groove 12, with the wire rope 20passing through the rope through hole 15. Here, the rectangular groove12 is called as it is because the drawing shows a rectangular shape. Itmay be formed in a U shape or a diamond shape.

As shown in FIGS. 2 and 5 through 7, in the steel net 30, the steel netbody 31 is formed in a rectangular plate shape so that it is insertedbetween the neighboring support members 10. A groove insertion portion32 is formed at both sides of the rectangular plate shaped steel netbody 31 and is inserted into the rectangular groove 12 of the supportmember 10. An upper and lower connection portion 35 is formed at theupper and lower sides of the steel net body 31 for engaging the upperand lower portions of the steel net 30 stacked between the supportmembers 10.

The wire rope 20 horizontally passes through the rope through hole 15formed at the support member 10, and two neighboring groove insertionportions 32 are inserted into the rectangular groove 12 of the supportmember 10, and a cover member 1 supporting the lateral end of the steelnet 30 is installed at the rear side of two groove insertion portions 32inserted into the rectangular groove 12 and is fixed with the supportmember 10 using the fixing bolt 2 or the U bolt 4.

As shown in FIGS. 5 through 7, the steel net 30 may be implemented basedon the first, second and third embodiments. First, the first embodimentwill be described with reference to FIGS. 5 through 8.

As shown in FIGS. 5 through 8, in the steel net 30 according to thefirst embodiment of the present invention, the groove insertion portion32 formed at both sides of the steel net 30 is bent at both sides of therectangular frame 37 in which the steel net body 31 is fixed, and a cutportion 33 and a bolt insertion hole 34 are formed at the rectangularframe 37, with the wire rope 20 passing through the cut portion, andwith the fixing bolt 2 passing through the bolt insertion hole 34. Upperand lower connection portions 35 are formed at the upper and lower endsof the rectangular frame 37 and are horizontally bent. An engaging hole36 is formed at the upper and lower connection portions 35 formed of ahorizontal steel plate and is engaged using a screw or rivet, with thesteel net being stacked up and down.

An angular pipe 3 is inserted between two groove insertion portions 32together with the rectangular groove 12. In a state that two grooveinsertion portions 32 are fixed in the interior of the rectangulargroove 12, and the cover member 1 is installed at the rear side of twogroove insertion portions 32 inserted together with the rectangulargroove 12 and supports the lateral ends of the steel net, the fixingbolt 2 is inserted from the front side of the support member 10 andpasses through the bolt insertion hole 34 of the groove insertionportion 32, the angular pipe 3 and the cover member 1, with the grooveinsertion portion 32 being inserted into the groove lower portion 13 andthe rectangular groove 12.

The second embodiment of the present invention will be described withreference to FIGS. 6 and 9. In the steel net of this embodiment, thegroove insertion portion 32 formed at both sides of the steel net 30 isbent at both sides of the rectangular frame 37 in which the steel netbody 31 is fixed. It is formed in a channel shape in such a manner thatthe bent width of the groove insertion portion 32 becomes half of thewidth of the rectangular groove 12. A cut portion 33 is formed at thegroove insertion portion 32, with the wire rope passing through the cutportion 33. A horizontal steel plate is horizontally bent at the upperand lower ends of the rectangular frame 37 for thereby forming the upperand lower connection portion 35. An engaging hole 36 is formed at theupper and lower connection portion 35 formed of a horizontal steel platefor thereby engaging the steel net 30 using a screw, rivet or wire.

In addition, the U-bolt 4 is inserted from the rear side, whilesurrounding from the front side of the support member 10, in a statethat the cover member 1 supporting the lateral end portion of the steelnet 30 is installed at the rear side of two groove insertion portions 32inserted together with the rectangular groove 12, and both ends of the Ubolt 4 pass through the cover member 1 and are fixed using nuts.

In the steel net 30 according to the second embodiment of the presentinvention, the steel net 30 stacked up and down between the supportmember 10 is engaged in such a manner that a screw, rivet or wire isinserted into the engaging hole 36 of the contacting upper and lowerconnection portions 35.

According to the third embodiment of the present invention as shown inFIGS. 7 and 10, in the steel net body 31, a plurality of vertical andhorizontal wires 31 a and 31 b are engaged in a rectangular net shape,and a right angle shaped upper and lower connection portion 35 is formedat the upper and lower ends of the vertical wire 31 a, and thevertically stacked upper and lower connection portions 35 are engagedusing the clip 38. The horizontal wire 31 b is extruded from both endsof the steel net body 31, and the groove insertion portion 32 is engagedat the protruded end portion, and a cut portion 33 is formed at thegroove insertion portion 32, with the wire rope 20 passing through thecut portion 33.

An angular pipe 3 is inserted between two groove insertion portions 3inserted together with the rectangular groove 12, and two grooveinsertion portions 32 are not movable in the interior of the rectangulargroove 12. In the above state, the U bolt 4 is inserted from the rearside while surrounding from the front side of the support member 10 in astate that the cover member 1 supporting the lateral end of the steelnet 30 is installed at the rear sides of two groove insertion portions32 inserted together with the rectangular groove 12, so that the bothends of the U bolt pass through the cover member 1 and are fixed by thenut.

According to the first, second and third embodiments of the presentinvention, the cut portion 33 is formed at the steel net 30, with thewire rope 20 horizontally passing through the cut portion 33. As shownin FIGS. 8 through 10, in the support member 10, the wire rope 20horizontally passes through the rope through hole 15 formed at the bothlateral sides 14 of the body 11 and the rectangular groove 12. When thewire rope 20 is inserted into the rope through hole 15, it is preferredto install the rope cover 5 for preventing the wire rope 20 from beingcut when contacting with the end of the rope through hole 15.

According to the steel net of the first embodiment of FIG. 5 and thesteel net according to the third embodiment of FIG. 7, the grooveinsertion potion 32 may be formed in an angle shape which may be shownby removing the imaginary line in the drawings. When the grooveinsertion portion 32 is made of angular members, the manufacture costdecreases.

FIGS. 12 a, 12 b and 12 c are views when the groove insertion portion 32is installed at both sides of the steel net body 31, of which FIG. 12 ais a view illustrating a construction that the end of the steel net body31 is welded at the rectangular frame 37, with the welded portion beingindicated by “w”, and FIG. 12 b is a view illustrating a constructionthat the press plate 39 is covered and fixed using a screw or a rivet ina state that both ends of the steel net body 31 is positioned at therectangular frame 37, and FIG. 12 c is a view illustrating aconstruction that the both ends of the steel net body 31 are bent instep shapes in the steel plates and are inserted into the same, and theengaged portion is fixed using a rivet or a screw.

FIG. 13 is a view of another example of the support mounting member 16which fixes the lower end of the support member 10. The outer supportpipe 17 and the inner fixture 18, which form a rectangular groove likethe support member 10 are installed at the upper side of the base plate20 fixed at the concrete portion using an anchor bolt, and the lower endof the support member 10 is inserted into the insertion portion betweenthe outer support pipe 17 and the inner fixture 18, and the supportmounting member 16 and the support member 10 inserted thereinto arefixed using a bolt.

The operations of the present invention will be described with referenceto FIGS. 2 and 13.

As shown in 2 through 13, when the steel net of the present invention isinstalled, a plurality of support members 10 are vertically installed onthe ground at regular intervals. When the support members 10 areinstalled on the ground, the rectangular groove 12 is oriented in therear direction, so that the back side in which the steel net 30 isinstalled is hidden, whereby the front side of the same looks nice.

After a plurality of support members 10 are vertically installed on theground at regular intervals, the wire rope 20 passes through the ropethrough holes 15 horizontally formed at the neighboring support members10, and the wire rope fixture 21 is connected with the end of the wirerope 20 passing through the support member 10 installed at both ends.The bolt is provided to the wire rope fixtures 21, so that the wire rope20 can be loosened or tightened by tightening or loosening the bolt. Atthe initial work stage, it is needed to make the wire rope 20 loosened,and after all steel nets are installed, it is needed to make the wirerope 20 tightened by tightening the bolt of the wire rope fixture 21.

Two steel nets 30 are inserted into the rectangular 12 formed at thesupport member 10, and the cover member 1 contacts with the rear surfaceof the steel net 30 inserted into the rectangular groove 12 togetherwith two groove insertion portions 32, and the steel net 30 is fixed atthe support member 10 by engaging the fixing bolt 2 or the U bolt 4, andthe upper and lower connection portion 35 formed at the upper and lowerportions of the steel net 30 are fixedly engaged using a bolt, a rivetor a wire, so that the installation work of the present invention isfinished.

When the steel net according to the present invention is installed, asshown in FIGS. 5, 6 and 7, the steel net 30 of the present invention maybe implemented based on the first, second and third embodiments. Theinstallation method is slightly different from each other. Theinstallation state of each embodiment will be described with referenceto a corresponding drawing.

When the steel net 30 of the first embodiment of FIG. 5 is installed, asshown in FIG. 8, the wire rope 20 is horizontally inserted into the ropethrough hole 15 horizontally passing through the support member 10. Therope through hole 15 is formed at both inner sides of the body 11 andthe rectangular groove 12 and at the lateral side 14. When the ropethrough hole 15 formed at the lateral portion 14 comes closer, and thenthe wire rope 20 passes through the rope through hole 15, since the wirerope 20 is supported by the flat groove portion 13, so that when rocksor steel net 30 fall down, the supporting force of the wire rope 20 isenhanced.

The groove insertion portion 32 bent at the steel net 30 is insertedinto the rectangular groove 12 of the support member 10. The grooveinsertion portion 32 of the steel net 30 inserted into the rectangulargroove 12 is engaged together with two groove insertion portions 32positioned at both ends of two steel nets 30 which are neighbor in thelateral direction.

The groove insertion portion 32 inserted into the rectangular groove 12is provided with the cut portion 33, so that it is inserted likesurrounding the previously installed wire rope 20. The cut portion 33 isthinner than the width or thickness of the rectangular groove 12, sothat a surplus space is formed between two groove insertion portions 32.When the angular pipe 3 is inserted into the above space, the thicknessthat two groove insertion portions 32 and the angular pipe 3 are summedis matched with the width of the rectangular groove 12, so that bothends of the steel net 30 are not movable in the rectangular groove 12.

In this state, the fixing bolt 2 is inserted from the front centerportion of the support member 10 and passes through the bolt insertionhole 34 of the groove insertion portion 32 inserted into the groovebottom portion 13 and the rectangular groove 12 of the rectangulargroove 12, and the angular pipe 3 and the cover member 1 and is engagedwith the backwardly protruded screw portion and is fixing using the nut,so that the steel net 30 is fixed at the support member 10.Continuously, the steel net 30 is inserted between the neighboringsupport members 10 in the same manner, so that a plurality of steel nets30 are stacked in a vertical direction, which are formed in therectangular plate shape as high as the height of the support member 10.

The upper and lower connection portion 35 is formed at the upper andlower ends of the stacked steel nets 30, so that the upper and lowerconnection portion 35 is stacked in the vertical direction. The upperand lower connection portions 35 are stably connected in such a mannerthat a bolt, a rivet or a wire is inserted into the engaging hole 36 ofthe stacked upper and lower connection portions 35. In thisconstruction, when land slides or rocks fall or the steel net 30 isbroken and falls down, since the upper and lower connection portions 35are fixedly connected by the rivet, bolt or wire, the upper and lowersteel nets are not widened, and landslide or falling rocks do notpenetrate in the forward direction of the steel net 30.

The installation of the steel net according to the second embodiment ofFIG. 6 will be described. It is nearly same as the installation of thefirst embodiment of FIG. 9, but in the second embodiment, the width ofthe groove insertion portion 32 is half of the width of the rectangulargroove 12. So, when two groove insertion portions 32 are inserted intothe rectangular groove 12, it is tightly inserted therein without anymovement. In this embodiment, it is not needed to insert the angularpipe 3 which is provided in the first embodiment.

As two groove insertion portions 32 are tightly inserted into therectangular groove 12, the U bolt 4 is inserted from the front side ofthe support member 10 and passes through the steel net 30, and the covermember 1 having the bolt insertion hole at both sides is contacted atthe rear surface of the steel net 30, and the screw portion of the Ubolt 4 passes through the bolt insertion hole of the cover member 1 andis engaged using the nut, so that the steel net is installed at thesupport member 10.

Since the construction that the upper and lower connection portion 35 ofthe steel nets 30 inserted and stacked between the support members 10 isfixed using a bolt, a rivet or a wire is the same as the firstembodiment, the detailed description of the same will be omitted.

FIG. 7 is a view of a construction that the steel net according to thethird embodiment of the present invention is installed at the supportmember 10. As shown in FIGS. 10 and 11, in the first embodiment, theconstructions that the wire rope 20 is installed at the support member10, and two groove insertion portions 32 are inserted into therectangular groove 12, and the angular pipe 3 is inserted between twogroove insertion portions 32 inserted into the rectangular groove 12 arethe same as the first embodiment of the present invention.

After the angular pipe 3 is inserted, the cover member 1 is contactedwith the rear end of the steel net 30 inserted into the rectangulargroove 12 together with two groove insertion portions 32, and the U bolt4 is installed in the second embodiment. In the same manner, the U bolt4 is inserted from the front side of the support member 10, and thescrew portion of the U bolt 4 passes through the bolt insertion holes ofthe steel net 30 and the cover member 1 and is engaged using the nut, sothat the both sides of the steel net 30 are fixed at the support member10.

FIGS. 8 through 10 show that the rope cover 5 is installed at theportion in which the wire rope 20 passes through the rope through hole15 of the support member 10. The wire rope 20 contacts with the end ofthe rope through hole 15 of the support member 10 made of metal. Withthe above structure, it is possible to prevent the disconnection of thesame.

As shown in FIGS. 5 and 7, in the steel net 30, the end of the grooveinsertion portion 32 is shown by an imaginary line. When the imaginaryline is deleted, the rectangular frame 37 and the groove insertionportion 32 are formed in an angle shapes, so that with the above method,it is possible to use the angles which are commercially available in themarket. In the case that the imaginary line portion is included, thehorizontal portion is further connected at the angled portion in a stepshape, so that it is needed to separately fabricate based on the pressprocess, whereby the manufacturing cost increases.

FIG. 13 is a view illustrating the support mounting portion 16 forinstalling the lower end of the support member 10. In this case, thebase plate 19 of the support mounting portion 16 is installed on theground using the anchor bolt, and the lower end of the support member 10is inserted into the insertion portion doubly formed at the supportmounting portion 16, and then the bolt is laterally installed, so thatthe installation of the support member 10 is finished.

INDUSTRIAL APPLICABILITY

As described above, in a falling rock preventing fence assembled with asteel net, a plurality of support members are provided in a pipe shapehaving a rectangular grooves in upper and lower longitudinal directions,with the support member being installed on the ground at regularintervals, and both ends of the steel net formed in a rectangular plateshape are inserted into the rectangular grooves of the neighboringsupport member and are fixed using a fixture such as a bolt, etc., andthe upper and lower portions of the steel nets stacked in the upper andlower direction are connected with a connection member such as a bolt,etc., and the strength of the steel net is enhanced by the rectangulargrooves longitudinally formed in the support member and the end of thesteel net inserted in the rectangular groove, so that the work forinstalling steel nets between the support members is easy and simply.Even when a steel net is damaged by falling rocks or landslide, it isneeded to repair only the damaged portions, so that a maintenance iseasy, and a cost for the repair decreases.

As the present invention may be embodied in several forms withoutdeparting from the spirit or essential characteristics thereof, itshould also be understood that the above-described examples are notlimited by any of the details of the foregoing description, unlessotherwise specified, but rather should be construed broadly within itsspirit and scope as defined in the appended claims, and therefore allchanges and modifications that fall within the meets and bounds of theclaims, or equivalences of such meets and bounds are therefore intendedto be embraced by the appended claims.

1. In a falling rock preventing fence which includes a plurality ofsupport members 10 vertically installed on the ground at regularintervals, a plurality of wire ropes 20 which horizontally pass throughthe support members 10, a plurality of wire rope fixtures 21 which arefixedly installed at the support members 10 provided at both ends forthereby fixing the both ends of the wire rope 20, and a steel net 30installed at a back surface of the support member, a falling rockpreventing fence assembled with a steel net characterized in that thesupport member 10 is formed in such a manner that a rectangular groove12 is formed over the entire length of the back surface of the body 11formed in a pipe shape, and a rope through hole 15 passes through theouter surface of the body 11 and the lateral side of the both sides ofthe rectangular groove 12; the steel net 30 is formed in such a mannerthat a groove insertion portion 32 inserted into the rectangular groove12 of the support member 10 is formed at both sides of the steel netbody 31 formed in a rectangular plate shape so that it is insertedbetween the neighboring support members 10, and an upper and lowerconnection portion 35 is formed at the upper and lower portions of thesteel net body 31 for engaging the upper and lower portions of the steelnet 30 stacked between the support members 10; and the wire rope 20horizontally passes through the rope through hole 15 formed at thesupport member 10; and two groove insertion portions 32 installed nearthe lateral sides and meeting with each other are inserted into therectangular groove 12 of the support member 10, and a cover member 1 isinstalled at the rear side of two groove insertion portions 32 insertedtogether with the rectangular groove 12 for supporting the lateral endsof the steel net 30, and the support member 10 and the steel net 30 arefixed using a fixing bolt 2 or a U bolt.
 2. The wall of claim 1, whereinsaid groove insertion portion 32 is bent at both sides of therectangular frame 37 in which the steel net body 37 is fixed, and thecut portion 33 through which the wire rope 20 passes and the boltinsertion hole 34 through which the fixing bolt 2 passes are formed atthe groove insertion portion 32, and the upper and lower connectionportion 35 is formed at the upper and lower ends of the rectangularframe 37 in which the horizontal steel plate is horizontally bent, andan engaging hole 36 is formed at the horizontal steel plate and isengaged using a screw or a rivet; and an angular pipe 3 is insertedbetween two groove insertion portions 32 inserted together with therectangular groove
 12. 3. The wall of claim 1, wherein said grooveinsertion portion 32 is bent at both sides of the rectangular frame 37in which the steel net body 31 is fixed, and the bent width portion ofthe groove insertion portion 32 is bent in a channel shape as wide asthe half of the width of the rectangular groove 12, and a cut portion 33is formed at the groove insertion portion 32 with the wire rope 20passing through the cut portion 33, and the upper and lower connectionportion 35 is formed at the upper and lower ends of the rectangularframe 37 so that the horizontal steel plate is horizontally bent, and anengaging hole 36 is engaged at the horizontal steel plate using a screwor a rivet.
 4. The wall of claim 1, wherein said steel net body 31 isengaged in a rectangular net shape in which a plurality of vertical andhorizontal wires 31 a and 31 b are engaged, and an upper and lowerconnection portion 35 is formed at the upper and lower ends of thevertical wire 31 a in a right triangle shape, and the upper and lowerconnection portions 35 contacting with each other are engaged using aclip 38, and the horizontal wire 31 b is protruded from both ends of thesteel net body 31, and the groove insertion portion 32 is engaged at theprotruded ends, and a cut portion 33 is formed at the groove insertionportion 32 with the wire rope 20 passing through the cut portion, and anangular pipe 3 is inserted between two groove insertion portions 32inserted together with the rectangular groove 12.